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Redstar BMW G9X M5 Secondary Downpipes
Redstar BMW G9X M5 Secondary Downpipes
Redstar BMW G9X M5 Secondary Downpipes

Redstar BMW G9X M5 Secondary Downpipes

Heat Shielding
Heat Shielding: No Heat Shielding
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Pairs well with

Unleash your BMW G90 M5 or G99 M5 Touring with Redstar Exhaust Secondary Downpipes for the S68 M60i engine. These secondary downpipes replace the restrictive secondary catalytic converters for a true secondary cat delete, delivering a direct plug-and-play upgrade that interfaces cleanly with the factory system.

By opening up the post-turbo exhaust path, the Redstar setup improves gas flow for sharper throttle response, quicker spool, noticeable power gains and a deeper, more assertive exhaust tone. An OEM-style heat shielding option is available to reduce radiant heat by up to 80%, helping to control under bonnet temperatures and support long-term turbo health. The system is designed to operate without triggering a Check Engine Light or error codes.

Built for demanding use, each assembly is crafted from 2.0mm wall 304 stainless steel, fully TIG welded and back purged with OEM-spec flanges and factory-style brackets. It is a true bolt-on performance exhaust solution from Redstar that combines durability, precision fit and proven results. Sold only with the Complete Downpipes System.

Available Options

  • OEM-Style Heat Shielding: Redstar's signature thermal management system reduces radiant exhaust heat by up to 80%. Developed with motorsport-inspired materials and construction, it uses a multi-layer design of ceramic insulation and embossed stainless steel foil. Unlike wraps or coatings that degrade quickly, Redstar shielding delivers long-term durability and consistent protection for engine bay components.

Key Performance Benefits

  • Noticeable power and torque gains by removing the restrictive secondary catalytic converters
  • No Check Engine Light or error codes
  • Faster turbo spool and crisper throttle response
  • Reduced under bonnet temperatures for improved component protection and turbocharger longevity
  • Deeper, more assertive exhaust note
  • Bolt-on installation that integrates with factory mounting points

Technical Specifications

  • 2.0mm wall 304 stainless steel
  • TIG welded and back purged
  • OEM-spec flanges
  • Brackets and mounts match OEM layout

Manufacturer fitment

  • 2025+ G90 M5
  • 2025+ G99 M5 Touring

Fits

BMW M5 (G90) Sedan M5 2024-current
BMW M5 (G99) Wagon M5 2024-current

Professional fitting is recommended.

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